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Finding the Fourth Proportional to 3,307.98, 4,564.89 and 1,815.86

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Solution

The fourth proportional to 3,307.98, 4,564.89 and 1,815.86 is: 2,505.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.98 : 4,564.89 = 1,815.86 : x
  2. Step 2: Convert to fraction form
    3,307.98/4,564.89 = 1,815.86/x
  3. Step 3: Cross multiply
    3,307.98x = 4,564.89 × 1,815.86
  4. Step 4: Simplify right side
    3,307.98x = 8,289,212.57
  5. Step 5: Solve for x
    x = 8,289,212.57/3,307.98
  6. Step 6: Final answer
    x = 2,505.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.